The walk-in conversation shall be carried out in a dedicated conversation room, the subject of the conversation before entering the conversation room, the conversation staff should open the monitoring system to ensure that the integrity of the entire conversation process audio and video recording. Before the conversation, the review and investigation team should be for the subject of the conversation of the physical, psychological, personality, family and other circumstances to map the understanding. After the subject of the conversation is brought to the conversation room, it should do its ideological work, ask it to turn off the cell phone, check the items carried by the subject of the conversation, and register the items that may harm personal safety for proper custody. At the end of the conversation, the escrow items returned to the subject of the conversation in person and signed by his confirmation.